Exactly, to quote the (current) article, >The caveat to this point, of course, is that this is also not as simplistic or straightforward as it might seem – des

Exactly, to quote the (current) article, >The caveat to this point, of course, is that this is also not as simplistic or straightforward as it might seem – despite the widespread perception, the level of CO2 in the atmosphere is actually very minimal. In fact, it can be pegged at around 500 parts-per-million (ppm), which is less than 0.05%. It's more than enough to cause problems without being trivial to take out and concentrate. Water may very well have enough lead in to damage someone's health without having enough to be economically beneficial to extract for the material alone.